Induced draft and smoke-consumer.



D. GOFF.

INDUCED DRAFT AND SMOKE CONSUMER.

APPLICATION r-ILBD Nov. 5, 1910.

1,008,638, Patented Nov; 14, 1911.

.i TED' sTATEs I PATENT 'oEEioE DANIEL GOFF, 0F MILLVILLE, NEW JERSEY.

INDUCED DRAFT AND SMOKE-CONSUMER.

Specification of Letters Patent.

Patented Nov. 14, 1911.

Application filed November 5, 1910. Serial No. 590,850.

the fire box, of means for automatically dis-y charging a large volume of steam into said fire box when the doors of the furnace are opened and of means for utilizing a portion of the steam from the boiler for controlling the main supply of steam.

It further consists of novel means for controlling the steam for actuating the parts.

It further consists of other novel features of construction, all as will be hereinafter controlled by the furnacedoor for regulatn fully set forth.

Figure 1 represents an elevation of a portion of a furnace, showing a portion of the front broken away, and with my invention applied thereto. Fig. 2 represents a plan view of a portion of the mechanism shown in Fig. 1. Fig. 3 represents a partial elevat-ion and partial sectional view showing some of the auxiliary grate bars and the steam superheating chamber, employed. Fig. 4 represents a sectional view on line Fig. 3. Figs. 5 and 6 represent, on Yan enlarged scale, a sectional view showing one= of the valves, in different positions. Fig. 7 represents a plan view, on an enlarged scale, of the connection between the furnace doors and the bar for actuating the valve.

Similar numerals of reference indicate corresponding parts in the figures.

Referring to the drawings, I have found in practice that it is of advantage to discharge a desired quantity of steam into the fire box at a proper point therein when the furnace doors are shut and to supply the fire box with a larger volume or quantity of steam when the doors are open and when the fuel is being fed to the fire box in order to cause the products of combustion and smoke to be entirely consumed and at the same time to set up an induced draft particularly at the rear of the fuel bed, in order to provide for the proper combustion of the fuel.

In the drawings, I have shown a construction which I have found operates successfully in practice but I desire it understood that changes may be made in the construction, the arrangement of the parts may be varied and other instrumentalities may be employed which will come within the scope o f the invention and I do not therefore desire to be limited, in every instance, to the `exact form as herein shown and described,

but desire to make such changes as may be necessary.

Certain features shown herein are embodied in my two applications, No. 602,7 54, filed J an. 16th, 1911, and No. 602,755, led

Jan. 16, 1911, and no claims are here made for such features as are claimed in the said two applications such as the fire box with thefgrate, air inlets in the sides of the re box, air conduits for the air inlets and steam nozzles for the air inlets with the box transversely arranged in the fire box for discharging Asteam thereinto, and with means ing the flow of steam as set forth in application, No. 602,755, and the fire box with the grate and the air inlets, with the steam conduits for discharging steam through the grate, steam'nozzles for the air inlets with means for closing one set of steam nozzles, the transversely disposed superheater box, and means controlled by the furnace door for regulating the flow of steam to the nozzles as set forth in applicationNo. 602,754.

1 designates a furnace having suitable walls and in which is situated a boiler 2, said furnace being provided with a re box 3, in which are grate bars 4 anda bridge wall 5,. vLocated within the fire box and extending laterally across the same, adjacent the rear thereof, is an auxiliary series of grate bars 6 which extend upwardly and preferably angularly away from the usual grate bars 4 and which series of grate bars 6 are supported in any suitable or desired manner, it being understood that the fuel is supported by said auxiliary grate bars 6 at the rear of the fuel bed.

7 designates a damper suitably supported in order to control the draft through the series of grate bars 6, said damper being suitably actuated for this purpose. Suitably supported adjacent the topv of said auxiliary series of grate bars 6 is a steam superheater or box 8.which, as will be best understood from Fig..4, is located within the re box preferably in a plane above the uated directly in the path of the heat from the fire boX as the same passes therefrom.

As will be best understood from Figs. 3 and 4, the boX 8 is provided with a steam superheating chamber 9 the wall of which, adjacent the fire boX 3, is provided with a plurality of openings or discharge ports 10 in order that the steam from said chamber 9 will be directed into the fire box at a suitable point above the fuel bed and in a direction contrary to the ordinary flow of draft in said lire boX. Above and below the steam chest or chamber 9 I provide communicating chambers 11 and 12 which form or serve as a jacket for said steam chamber 9 and into which I conduct a suitable quantity of steam from the boiler in order to prevent injury to the walls of the box 8 and thus to the steam chamber 9.

13 designates a pipe communicating with the boiler 2 at a suitable point and being suitably controlled by a valve 14. Connected with said pipe 13 is a pipe 15, communication between said pipe 15 and pipe 13 being controlled by valve 16, said pipe 15 discharging into the lower chamber 12 of the jacket of the boX 8.

Leading from the upper chamber 11, see Fig. 3, is a pipe 17 which is in communication with pipe 18, the latter having a bypass pipe 19 communicating therewith which also communicates with a pipe 2O which by means of a pipe 21 discharges into the steam chamber 9, it being noted that the by-pass pipe 19 is controlled by a suitable valve 22. From this construction and arrangement it will be noted that steam may pass from the boiler 2 through pipe 13 and pipe 15 into the lower chamber 12 inthe box 8 and from this chamber, which has communication with the upper chamber 11, the steam will pass through pipe 17, by-pass pipe 19 through pipe 2O and thence through pipe 21 into the steam chamber 9 from whence it is discharged through the ports or openings 10 into the fire boX 3.

23 designates a valve chest which is provided, in the present instance, with a slide valve 24, which latter is connected with an arm or bar 25 projecting through the wall of the valve chest 23 and which arm is adapted to be suitably connected with a bar 26 and a bar 27, which are respectively connected one with one door 28 of the furnace, and the other with the other door 29 of the furnace (when the furnace is provided with two doors) which doors may be of any suitable construction. Each of the doors, in the present instance, are suitably mounted upon a rod 30 which are provided with disk 31 having a pin 32 at a suitable point thereon at which the bars 26 and 27 are respectively connected in order that as the doors 28 and 29 are opened or closed they will suitably actuate the bars 26 and 27 to move the valve 24, as will be hereinafter described.

33 designates a pipe communicating with the pipe 13 leading from the boiler 2 and also with the upper portion of the valve chest 23. Leading from a suitable point in the valve chest 23, preferably at the lower portion thereof, is a pipe 34 which is controlled by valve 24, said pipe 34 communicating, preferably, with the lower portion of a` piston chamber 35 in which is mounted a piston 36 connected through suitable means with a lever 3.7 pivotally supported at 38 and preferably provided with a weight 39, it being understood that when the piston 36 is suitably actuated it will raise or elevate the free end of the lever 37, as will be understood.

In suitable connection with the lever 37 is a valve 40 controlling the passage through a steam chamber 41 with the lower portion of which the said pipe 2O communicates, above the point where the by-,pass 19 from the pipe 18 communicates, it being further noted that the said pipe 18 discharges into or communicates with the said steam chamber 41 at a point above the valve seat for the valve 40.

42 designates a pipe leading to a suitable point in the lower portion of the valve chest 23 and so situated in order that said valve 24 closes communication between the pipe 34 and pipe 42 or opens communication therebetween, said pipe 42 leading to any suitable point of discharge.

43 designates a pipe communicating) with a suitable point of the piston chamber 35 and discharging at a suitable point in order to provide for the exhaust of any steam or condensation thereof. It will be understood that at any suitable point or points in the various pipes, I may provide valves in order to be able to manually control the passage therethrough and discharge the iiow of steam, as may be desired or necessary.

The operation of the parts just described will be readily apparent. As the steam passes from/the pipe 13 downwardly it will pass into pipe 33 and so into valve chest 23. When the valve 24 is in the position seen in Figs. 1 and 5, no further passage of the steam is permitted, it being understood, however, that as previously described, steam will pass through pipe 15 and so into the two chambers 11 and 12 and through pipe 17, by-pass 19 and the pipe 20 into the steam chamber 9, it being understood, however, that this is a very small quantity of steam and that the amount thereof is controlled by the valve 22. It will be noted that as the steam passes upwardly through pipe 18 a portion thereof will be conducted into the steam chamber 41 above the valve 40 but can not pass therefrom since the valve is closed. Vhen either or both of the doors 28 and 29 are open it will be understoodthat the rods 30 are rotated in order to pull upon the bars 26 or 27 in the direction indicated by the arrow in Fig. 2. This will pull over the valve 24 into the position seen in Fig. 6, opening pipe 34 and the pipe 33 but the pipe 42 will remain closed. The steam will then pass through pipe 33 and valve chest 23 through pipe 34 and into the piston chamber 35 below the piston 36 which will be raised and will elevate the free end of the lever 37 and the said weight 39. This will elevate the valve 40 and permit passage of the large quantity of steam from the pipe 18 through said steam chamber 41 into the pipe 20, into steam superheating chamber 9 from thence a large quantity of steam will be directed into the fire box 3 while either or both of the doors 28 and 29 are open, during the feeding of the fuel to the fire box. Any suitable means for returning the valve 24 to its closed position may be employed and in the.drawing I have shown a spring 44 for this purpose, it being noted that as the doors 28 and 29 are closed, the spring 44 returns the valve to its position seen in Figs. l and 2 at which time the pipes 34 and 42 are in communication and the exhaust from the piston chamber 35 will pass therefrom and through pipe 42v to a suitable point of discharge, it being understood of course that any steam in the chamber 41 can pass through pipe 2O and into the steam superheating chamber 9 to be discharged into the lire box. From this it will be understood that I have provided means whereby a continuous flow of a small quantity of steam, the amount of which may be adjusted, can pass at all times if desired from the boiler into the fire box and that I have provided means whereby ka large volume or quantity of steam will be automatically directed or discharged into the fire box when the door or doors of the furnace are open and I employ or utilize a portion of the steam from the boiler to actuate the controlling valve for permitting a large volume of steam to be discharged into the lire box. I preferably form a connection between the rod 25 and the bars 26 and 27 by means of a pin 45 movable in slots '46 and 47 formed in the bars 26 and 27, in order that either one of the doors may be opened or closed and thus actuate the rod 25 without the necessity of both doors being open, this being apparent by reason of the fact that, for example, should door 28 be opened the wall of the slot 46 therein will pull upon the pin 45 moving over t-he rod 25 in the direction of the arrow in Fig. 7, the pin 45 sliding freely in slot 47 in the bar 27, so that the latter may remain stationary, as will be evident.

By reason of the discharge or escape of steam from the piston chamber 35 through exhaust of the steam from the piston chamber 35, the valve 40 will close slowly or some time after closing of the doors of the furnace and I have provided a valve 48 in said pipe 42 by which I can adjust or control this escape of the exhaust in order to provide for a greater or less time for thev closing of the valve 40, the advantage of which will be apparent.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a device of the character stated, a lire box, a boiler, a steam chamber having ports for directing thesteam therefrom into l said fire box, a jacket around said steam chamber forming chambers having communication with each other, a pipe leading from said boiler to one of the chambers .in the jacket, a pipe leading from the other chamber in the jacket, a steam valve chamber into which the last mentioned pipe discharges, a valve controlling said valve steam chamber, a pipe leading from said valve steam chamber and communicating with said steam chamber, and means for actuating said valve by steam from the boiler whereby the flow of steam 'through said steam valve chamber is permitted.

2. In a device of the character stated, a fire box, a boiler, a steam chamber having ports for directing the steam therefrom into said fire box, a jacket around said steam chamber forming communicating chambers therebetween, a pipe leading from said boiler and discharging into one of the jacket-chambers, a pipe leading from the other j acket-chamber, a steam valve chamber into which said last mentioned pipe discharges, a valve for controlling the passage of steam through said steam valve chamber, a pipe forming a communication between said steam valve chamber and said steam chamber, a by-pass between said second mentioned pipe and the last mentioned pipe whereby a flow of steam may pass therebetween independent of the said valve,and means for moving said valve to permitthe main supply of steam to pass from the boiler into said chamber.

3. In a device of the character stated, a fire box, a boiler, a steam chamber having ports for directing the steam therefrom into said fire box, a jacket around said steam chamber forming communicating chambers therearound, a pipe leading from said boiler and discharging into one of the jacketchambers, a pipe leading from the other j acket-chamber, a steam valve chamber into` which said last mentioned pipe discharges, a valve for controlling the passage of steam through said steam valve chamber, a pipe forming a communication between said steam valve chamber and said steam chamber, a by-pass between said second mentioned pipe and the last mentioned pipe, whereby a flow of steam may pass therebetween independent of the said valve, means for moving said valve to permit the main supply of steam to pass from the boiler into said chamber, a piston chamber, a piston therein in suitable engagement with said valve, a communication between said boiler and said piston chamber whereby steam may be. directed against said piston to actuate the valve, and means for controlling the supply of steam to said piston chamber.

4. In a device of the character stated, a fire box, a boiler, a steam chamber having ports for directing the steam therefrom into said fire boX, a jacket around said steam chamber forming communicating chambers therearound, a pipe leading from said boiler and discharging. into one of the jacketchambers, a pipe'leading from the other j acket-chamber, a steam valve chamber into which said last mentioned pipe discharges, a valve for controlling the passage of steam through said steam valve chamber, a pipe forming a communication between said steam valve chamber and said-steam chamber, a by-pass between said second mentioned pipe and the last mentioned pipe, whereby a ilow of steam may pass therebetween independent of the said valve, means for moving said valve to permit the main supply of steam to pass from the boiler into said chamber, a piston chamber, a piston therein in suitable engagement with said valve, a communication between said boiler and said piston chamber whereby steam may be directed against said piston to actuate the valve, and a valve actuated by the movement of the furnace door for controlling the supply of steam to said piston chamber.

' 5. In a device of the character stated, a

fire boX, a boiler, a steam chamber having ports for directing the steam therefrom into said re box, a jacket around said steam chamber forming chambers having communication with each other, a pipe leading from said boiler to one of the chambers in the jacket, a pipe leading from the otherchamber in the jacket, a steam valve chamber into which the last mentioned pipe discharges, a valve controlling said steam valve chamber, a pipe leading from said steam valve chamber and communicating with said steam chamber, means for actuating said valve by steam from the boiler whereby the flow of steam through said steam valve chamber is permitted and a by pass for conducting a supply of steam to the first chamber independent of the valve.

6. In a device of the character stated, a iire boX, a boiler, a steam chamber having ports for directing the steam therefrom into said iire box, a jacket around said steam chamber forming communicating chambers therearound, a pipe leading from said boiler and discharging into one of the jacket-chambers, a pipe leading from the other jacketchamber, a steam valve chamber into which said last mentioned pipe discharges, a valve for controlling the passage of steam through said steam valve chamber, a pipe forming a communication between said steam valve chamber and said steam chamber, a by-pass between said second mentioned ipe and the last mentioned pipe, whereby a ow of steam may pass therebetween independent of the said valve, means for moving said valve to permit the main supply of steam to pass from the boiler into said chamber, a piston chamber, a piston therein in suitable engagement with said valve, and a communication between said boiler and said piston chamber whereby steam may be directed against said piston to actuate the valve.

DANIEL GOFF. Witnesses:

WVM. CANER WIEDERSEIM, C. D.MGVAY.

Copies of this patent may be obtained for ve cents each, by addressing .the "Commissioner of Patents, Washington, D. C. 

